diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/flate/level5.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/flate/level5.go | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/vendor/github.com/klauspost/compress/flate/level5.go b/vendor/github.com/klauspost/compress/flate/level5.go index d513f1ffd..293a3a320 100644 --- a/vendor/github.com/klauspost/compress/flate/level5.go +++ b/vendor/github.com/klauspost/compress/flate/level5.go @@ -182,12 +182,27 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) { // match. But, prior to the match, src[nextEmit:s] are unmatched. Emit // them as literal bytes. - // Extend the 4-byte match as long as possible. if l == 0 { + // Extend the 4-byte match as long as possible. l = e.matchlenLong(s+4, t+4, src) + 4 } else if l == maxMatchLength { l += e.matchlenLong(s+l, t+l, src) } + + // Try to locate a better match by checking the end of best match... + if sAt := s + l; l < 30 && sAt < sLimit { + eLong := e.bTable[hash7(load6432(src, sAt), tableBits)].Cur.offset + // Test current + t2 := eLong - e.cur - l + off := s - t2 + if t2 >= 0 && off < maxMatchOffset && off > 0 { + if l2 := e.matchlenLong(s, t2, src); l2 > l { + t = t2 + l = l2 + } + } + } + // Extend backwards for t > 0 && s > nextEmit && src[t-1] == src[s-1] { s-- |